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Antibacterial Alkaloids and Polyketide Derivatives from the Deep Sea-Derived Fungus Penicillium cyclopium SD-413.

ABSTRACT: Nine secondary metabolites (1-9), including two new polyketide derivatives 9-dehydroxysargassopenilline A (4) and 1,2-didehydropeaurantiogriseol E (5), along with seven known related secondary metabolites (1-3 and 6-9), were isolated and identified from the deep sea-derived fungus Penicillium cyclopium SD-413. Their structures were elucidated on the basis of 1D/2D NMR spectroscopic and mass spectrometric analysis and the absolute configurations were determined by the combination of NOESY correlations and time-dependent density functional (TDDFT) ECD calculations. Compounds 1-9 inhibited some pathogenic bacteria including Escherichia coli, E. ictaluri, Edwardsiella tarda, Micrococcus luteus, Vibrio anguillarum, and V. harveyi, with MIC (minimum inhibitory concentration) values ranging from 4 to 32 ?g/mL.

SUBMITTER: Li YH

PROVIDER: S-EPMC7695020 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature

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Antibacterial Alkaloids and Polyketide Derivatives from the Deep Sea-Derived Fungus Penicillium cyclopium SD-413.

Li Yan-He YH Li Xiao-Ming XM Li Xin X Yang Sui-Qun SQ Shi Xiao-Shan XS Li Hong-Lei HL Wang Bin-Gui BG

Marine drugs 20201106 11

Nine secondary metabolites (1-9), including two new polyketide derivatives 9-dehydroxysargassopenilline A (4) and 1,2-didehydropeaurantiogriseol E (5), along with seven known related secondary metabolites (1-3 and 6-9), were isolated and identified from the deep sea-derived fungus Penicillium cyclopium SD-413. Their structures were elucidated on the basis of 1D/2D NMR spectroscopic and mass spectrometric analysis and the absolute con ...[more]

PMID: 33172187

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